package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 后期需要进行md5加密，然后再进行比对
         password= DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }
    //新增员工

    @Override
    public void addEmp(EmployeeDTO emp) {
        Employee employee=new Employee();
        //对象属性拷贝：将empdoto里的属性值拷贝到emp里面
        BeanUtils.copyProperties(emp,employee);
        //补充信息
        employee.setStatus(StatusConstant.DISABLE);
        employee.setPassword("123456");
        employeeMapper.addEmp(employee);
    }

    @Override
    public PageResult getPage(EmployeePageQueryDTO page) {
        //调用PageHelper.startPage
        PageHelper.startPage(page.getPage(), page.getPageSize());
        //调用函数
       List<Employee> list= employeeMapper.getPage(page);
       //将其封装到Page
        Page<Employee> p= (Page<Employee>) list;

        return new PageResult(p.getTotal(),p.getResult());
    }

    @Override
    public void update(Long id, Integer status) {
        Employee employee=Employee.builder()
                .id(id)
                .status(status)
                .build();
        employeeMapper.update(employee);
    }

    @Override
    public void changeInfo(Employee employee) {
//        //补全信息
//        employee.setUpdateUser(BaseContext.getCurrentId());
//        employee.setUpdateTime(LocalDateTime.now());
        //调用函数
        employeeMapper.update(employee);
    }

    @Override
    public Employee getInfoById(Long id) {
        return employeeMapper.getInfoById(id);
    }

}
